Friday-Sunday. Even back in its early days, Boulder’s annual Aerial Dance Festival was an international affair in terms of the talent and attention it attracted. But now in its 15th year, the brainchild of Frequent Flyers Productions‘ artistic director Nancy Smith is well known as one of the best places in the world to dive into the art of high-flying dance, whether it’s through silks, trapeze, stilts, ropes, bungie cords or those squirrelly mechanisms known as “invented apparatus.” The two-week fest culminates this weekend with its public “Showcase Performances,” featuring an impressive variety show of the best artists on hand. 8 p.m. Friday-Saturday and 2 p.m. Saturday-Sunday at the Dairy Center for the Arts, 2590 Walnut St. in Boulder. $25. 303-444-7328 or frequentflyers.org.